espcoredump: Fix espcoredump.py shebang and file mode

This commit adds back the shebang and executable file mode for
espcoredump.py

components/espcoredump/espcoredump.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 #
 # SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
 #

tools/ci/executable-list.txt

@@ -3,6 +3,7 @@ components/app_update/otatool.py
 components/efuse/efuse_table_gen.py
 components/efuse/test_efuse_host/efuse_tests.py
 components/esp_wifi/test_md5/test_md5.sh
+components/espcoredump/espcoredump.py
 components/espcoredump/test/test_espcoredump.py
 components/espcoredump/test/test_espcoredump.sh
 components/espcoredump/test_apps/build_espcoredump.sh